<?xml version="1.0"?>
<Spase xmlns="http://www.spase-group.org/data/schema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.spase-group.org/data/schema http://www.spase-group.org/data/schema/spase-2_2_9.xsd">
  <Version>2.3.0</Version>
  <NumericalData>
    <ResourceID>spase://NASA/NumericalData/Voyager1/Ephemeris/P1D</ResourceID>
    <ResourceHeader>
      <ResourceName>Voyager 1 Spacecraft Positions</ResourceName>
      <ReleaseDate>2020-07-07T21:15:51Z</ReleaseDate>
      <Description>Voyager 1 spacecraft positions generated from data at HelioWeb (cohoweb.gsfc.nasa.gov/helios/heli.html) These data were obtained from running the program HELICOOR in the public directory NSSDCA::ANON_DIR:[ACTIVE.HELIO]. These data are based on predicted trajectories calculated with the GTDS code by the NSSDC Satellite Situation Center and converted to solar ecliptic and heliographic coordinates by the HELIOCOOR program. The HELICOOR code was written by R. Parthasarathy. The program GENTRJCON added the HILLON longitude.</Description>
      <Contact>
        <PersonID>spase://SMWG/Person/Adam.Szabo</PersonID>
        <Role>MetadataContact</Role>
      </Contact>
      <PriorID>spase://VHO/NumericalData/Voyager1/Ephemeris/P1D</PriorID>
        <PriorID>spase://VSPO/NumericalData/Voyager1/Ephemeris/P1D</PriorID>
    </ResourceHeader>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/VHO-VMO</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <AccessURL>
        <Name>VHO Repository</Name>
        <URL>https://vho.nasa.gov/mission/voyager/1/ephemeris/</URL>
        <Description>VHO holdings of Voyager 1 ephemeris</Description>
      </AccessURL>
      <Format>Text</Format>
      <Encoding>ASCII</Encoding>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <AccessURL>
        <Name>FTPS from SPDF (not with most browsers)</Name>
        <URL>ftps://spdf.gsfc.nasa.gov/pub/data/voyager/voyager1/traj/ssc/</URL>
        <Description>In CDF via FTP from SPDF</Description>
      </AccessURL>
      <AccessURL>
        <Name>HTTPS from SPDF</Name>
        <URL>https://spdf.gsfc.nasa.gov/pub/data/voyager/voyager1/traj/ssc/</URL>
        <Description>In CDF via HTTP from SPDF</Description>
      </AccessURL>
      <Format>Text</Format>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/PDS/PPI</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <AccessURL>
        <Name>PDS/PPI</Name>
        <URL>https://pds-ppi.igpp.ucla.edu/search/view/?id=pds://PPI/VG1-SS-POS-6-1DAY-V1.0</URL>
        <ProductKey>VG1-SS-POS-6-1DAY-V1.0</ProductKey>
        <Description>This collection is archived with NASA's Planetary Data System.</Description>
        <Language>En</Language>
      </AccessURL>
      <Format>Text.ASCII</Format>
      <Acknowledgement>NASA's Planetary Plasma Interactions (PPI) Node of the Planetary Data System (PDS) and the P.I. for the data.</Acknowledgement>
    </AccessInformation>
    <InstrumentID>spase://SMWG/Instrument/Voyager1/Ephemeris</InstrumentID>
    <MeasurementType>Ephemeris</MeasurementType>
    <TemporalDescription>
      <TimeSpan>
        <StartDate>1977-09-09T00:00:00Z</StartDate>
        <StopDate>2015-12-31T23:59:59Z</StopDate>
      </TimeSpan>
      <Cadence>P1D</Cadence>
    </TemporalDescription>
    <Parameter>
      <Name>Year</Name>
      <ParameterKey>Field 1</ParameterKey>
      <Description>Year</Description>
      <Support>
        <SupportQuantity>Temporal</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>DOY</Name>
      <ParameterKey>Field 2</ParameterKey>
      <Description>Day of Year</Description>
      <Support>
        <SupportQuantity>Temporal</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Radial Distance</Name>
      <ParameterKey>Field 3</ParameterKey>
      <Description>Spacecraft Radial Distance in AU</Description>
      <Units>AU</Units>
      <UnitsConversion>1.49598e11&gt;m</UnitsConversion>
      <CoordinateSystem>
        <CoordinateRepresentation>Spherical</CoordinateRepresentation>
        <CoordinateSystemName>HGI</CoordinateSystemName>
      </CoordinateSystem>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>HGI Latitude of Spacecraft</Name>
      <ParameterKey>Field 4</ParameterKey>
      <Description>Spacecraft latitude in the HGI system (degrees)</Description>
      <Units>degrees</Units>
      <CoordinateSystem>
        <CoordinateRepresentation>Spherical</CoordinateRepresentation>
        <CoordinateSystemName>HGI</CoordinateSystemName>
      </CoordinateSystem>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>HG Longitude of Spacecraft</Name>
      <ParameterKey>Field 5</ParameterKey>
      <Description>Spacecraft longitude in the HG system (degrees)</Description>
      <Units>degrees</Units>
      <CoordinateSystem>
        <CoordinateRepresentation>Spherical</CoordinateRepresentation>
        <CoordinateSystemName>HG</CoordinateSystemName>
      </CoordinateSystem>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>HGI Longitude of Spacecraft</Name>
      <ParameterKey>Field 6</ParameterKey>
      <Description>Spacecraft longitude in the HGI system (degrees)</Description>
      <Units>degrees</Units>
      <CoordinateSystem>
        <CoordinateRepresentation>Spherical</CoordinateRepresentation>
        <CoordinateSystemName>HGI</CoordinateSystemName>
      </CoordinateSystem>
      <Support>
        <SupportQuantity>Positional</SupportQuantity>
      </Support>
    </Parameter>
  </NumericalData>
</Spase>
